Written by Robert J. Matthews
A new Science study shows that some of the 16 million U.S. COVID victims still have health issues.
Long COVID is a syndrome that can last weeks, months, or years following an acute COVID-19 infection.
No test can confirm lengthy COVID symptoms. Some experts believe overactive immune cells induce lengthy COVID, but the exact mechanism is unknown.
At six months, 40 of 113 mild and severe COVID-19 patients at four Swiss hospitals had long-term symptoms, and 22 had them at 12 months.
Long-term COVID patients had increased complement activity, blood cell dysregulation (hemolysis and platelet activation), and tissue injury in their blood samples, according to researchers.
The modest study may provide "a basis for new diagnostic solutions.
These findings of inflammation in long COVID patients are not surprising or unique to long COVID, but they are a step toward pinpointing the etiology.
Researchers aren't the only ones studying the syndrome.